JP3515537B2 - Reinforcement bracket - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a reinforcing metal fitting for reinforcing a connecting portion of structural members constituting a wooden building. More specifically, the present invention relates to a reinforcing metal member that reinforces a connecting portion of two structural members that are connected at a substantially right angle.

[0002]

2. Description of the Related Art A wooden building is constructed by connecting columns and beams, which are structural members made by cutting wood into prismatic shapes, and beams and beams. The method of connecting the pillar and the beam is performed by press-fitting square-shaped mortises formed at both ends of the pillar into square-shaped mortar holes formed in the pillar. That is, in the method of connecting the pillar and the beam, the outer surface of the mortise is brought into pressure contact with the inner surface of the mortise hole to connect the pillar and the beam.

However, when a horizontal shaking earthquake occurs and the column shakes, the column is inclined with a corner formed by the upper surface of the beam and the side surface of the pillar (hereinafter referred to as a structural member corner) as a fulcrum. At the same time, they try to move in the tilt direction of the column around the corners of the structural member. That is, the hoso tries to escape from the hoso hole while drawing an arc.

Therefore, at the time of the Great Hanshin Earthquake, the column could not withstand the great shaking of the column due to the earthquake, and the hozo could slip out of the hoso hole, or bend when the hozo tried to slip out of the hoso hole, resulting in bending of the hoso and the hoso hole. Many wooden buildings were destroyed due to damage to the building.

Therefore, attention has been paid to the earthquake resistance of wooden structures.
The method of earthquake-proofing the wooden structure is to further connect the pillars and beams that are jointed with a mortise with reinforcing metal fittings.

As shown in FIG. 4, the conventional reinforcing metal fitting for connecting the pillar A and the beam B is formed into an L-shape by bending a strip material at a substantially right angle. The first fixing piece 50 which is one of the L-shaped pieces
Have holes 6 formed at intervals in the long side direction. Similarly, the second fixing piece 51, which is the other piece, also has the holes 6 formed at intervals in the long side direction.

In the reinforcing metal fitting having the above structure, the first fixing piece 50 is brought into contact with the pillar A so that the corners of the structural member and the bent portion of the reinforcing metal fitting (hereinafter referred to as the bent portion) are substantially aligned with each other. While the second fixing piece 51 is screwed with the screw 5 inserted into the hole 6 in the closed state, the second fixing piece 51 is screwed with the screw 5 inserted into the hole 6 while being in contact with the beam B. It is fixed to beam B.

Therefore, even if the pillar A is about to shake due to an earthquake, since the connecting portion between the pillar A and the beam B is restrained by the reinforcing metal fitting, it is possible to prevent the mud from coming out of the mud hole. is there.

[0009]

However, when a rolling earthquake occurs, if the pillar tries to lean toward the side surface side of the pillar to which the reinforcing metal fittings are not attached, with the corners of the structural member as the fulcrum, The fixed piece 50 also tries to move so as to draw an arc along with the pillar. Thereby, the bent portion side of the second fixing piece 51 is pulled by the first fixing piece 50,
It separates from the beam. At the same time, the interval connecting the arbitrary point on the first fixing piece 50 in the axial direction of the column and the arbitrary point on the second fixing piece 51 in the axial direction of the beam changes. In addition, the bent portion side of the first fixing piece 50 is separated from the pillar A. That is, when the first fixing piece 50 is about to move, a pulling force is generated on the bent portion side of the first fixing piece 50 by the force that the second fixing piece 51 tries to maintain on the beam. Bending occurs in the second fixing piece 51, and a bending force of the second fixing piece 51 causes a tensile force in an oblique direction with respect to the second fixing piece 51 as the first fixing piece 50 moves. Occurs.

At that time, since the first fixing piece 50 is inclined along the pillar, the bent portion forms an obtuse angle between the first fixing piece 50 and the second fixing piece 51 in a state of being separated from the corner of the structural member. It will be transformed into.

The force that causes the first fixing piece 50 and the second fixing piece 51 to bend is the same as the first fixing piece 50 and the second fixing piece 51.
There is a case where the first fixing piece 50 and the second fixing piece 51 are screwed to the screw 5 in the axial direction of the screw 5, and the screw 5 is pulled out. That is, the first fixing piece 50 that is bent with respect to the pillar is bent.
Had to pull out the screw 5 like pulling out a nail. Similarly, the second fixing piece 51 may also pull out the screw 5 like pulling out the nail by pulling out the nail.

Therefore, the reinforcing metal fittings from which the screws 5 have fallen off due to the deformation of the first fixing piece 50 and the second fixing piece 51 are not fixed to the columns and beams, and the strength of the connecting portion cannot be reinforced.

On the other hand, in the event of a vertical shaking earthquake, when a force is generated in the direction in which the mortise comes out of the mortise hole, the first fixing piece 50 tends to move in the axial direction of the column. As a result, the bent portion is separated from the corner portion and the second fixing piece 5
The bent portion side of 1 is separated from the beam B. That is, a pulling force in a direction perpendicular to the second fixing piece 51 is generated on the bent portion side of the second fixing piece 51, and the second fixing piece 51 is bent.

At this time, since the second fixing piece 51 is bent by the pulling force, the bent portion cannot maintain a right angle, and the first fixing piece 50 and the second fixing piece 51 form an obtuse angle. It will be transformed.

Further, the force which causes the second fixing piece 51 to bend is generated as a pulling force in the axial direction of the screw 5 in which the second fixing piece 51 is screwed through the second fixing piece 51, and by extension, the screw. I sometimes pulled out 5.

Therefore, the reinforcing metal fitting, from which the screw 5 has fallen off due to the deformation of the second fixing piece 51, cannot connect the column and the beam, and the strength of the connecting portion cannot be reinforced.

Therefore, the present invention can maintain the connection between the structural members and the reinforcement of the strength of the connecting portion of the structural members without dropping off even if large shaking and vibration due to an earthquake occur. An object is to provide a reinforcing metal fitting.

[0018]

[Means for Solving the Problems] To solve the above problems,
The auxiliary metal fitting according to the present invention includes a first piece 1 fixed substantially in contact with one structural member A of the two structural members A and B connected at a substantially right angle, and the first piece 1. and a second piece 2 extends from one end of said piece 1 has been found provided so as to form a substantially right angle, the reinforcement fitting said second piece 2 is fixed substantially in contact with the other of the structural member B In the above, a third piece 3 extending from one side of the first piece 1 in a direction substantially perpendicular to the first piece 1 is provided, and one side of the second piece 2 is connected to the second piece 2. A fourth piece 4 extending in a direction substantially perpendicular to the first piece is provided.
Of the structural members A and B at the corner formed by 1 and the second piece 2.
A convex reinforcing portion 13 extruded from the contact surface side is formed, the third piece 3 is fixed substantially in contact with the one structural member A, and the fourth piece 4 is the other structural member B. It is characterized in that it is substantially brought into contact with and fixed .

The reinforcing metal fitting having the above-mentioned structure is provided with the third piece 3 which is substantially perpendicular to the first piece 1,
The section modulus formed by the first piece 1 and the third piece 3 is much larger than the section modulus of only the first piece 1, and the bending strength on the first piece 1 side is increased. Further, since the fourth piece 4 that is substantially perpendicular to the second piece 2 is provided, the section modulus formed by the second piece 2 and the fourth piece 4 becomes the section coefficient of only the second piece 2. It is much larger than the above, and the bending strength on the second piece 2 side is increased.

The reinforcing metal fittings are, for example, screw members, nails,
A corner formed by the first piece 1 and the second piece 2 (hereinafter referred to as a corner) by a fixing means such as an adhesive material or an adhesive tape;
The first piece and the third piece are substantially brought into contact with and fixed to one of the structural members A in a state in which a corner formed by the two structural members A and B (hereinafter, referred to as a structural member corner) is substantially matched. At the same time, the second piece and the fourth piece are abutted and fixed to the other structural member B.

When a rolling earthquake occurs in the state where the reinforcing metal fittings are attached, one structural member A uses the corners of the structural members not having the reinforcing metal fittings as fulcrums to support the axial center of the one structural member A. When tilted toward the corner of the structural member to which the reinforcing metal fitting is not attached, the first piece 1 also tries to move upward so as to draw an arc around the corner of the structural member to which the reinforcing metal fitting is not attached. Thereby, the first piece 1 tends to separate the corner side of the second piece 2 from the beam. That is, a pulling force is generated on the corner portion side of the second piece 2 and the second piece 2 tends to be bent. However, a fourth piece 4 in a direction perpendicular to the second piece 2 is provided on one side of the second piece 2 to increase the section modulus, and the bending strength against the tensile force of the first piece 1 is increased. Therefore, the second piece 2 does not bend.

On the corner side of the first piece 1, a force is generated by the second piece 2 to prevent the first piece 1 from moving, and the first piece 1 is bent. A third piece 3 perpendicular to the first piece 1 is provided on one side to increase the section modulus, and the bending strength against the tensile force of the second piece 2 is increased. Therefore, the first piece 1 does not bend.

That is, even if the first piece 1 and the second piece 2 are pulled toward each other, the bending strength of the reinforcing metal member is increased, so that the first piece 1 and the second piece 2 are not largely bent and the vicinity of the corner is increased. Will not deform. Further, since the deformation in the vicinity of the corner does not occur, the force for separating from the structural members A and B generated by bending the first piece 1 and the second piece 2 does not occur.

Therefore, as for the force for separating the reinforcing metal member from the structural member, only the force in the direction orthogonal to the first piece 1 and the force in the direction orthogonal to the second piece 2 are generated. That is, the first piece 1 itself does not deform, and the first piece 1 itself tries to separate from the structural member, so that a force in a direction orthogonal to the first piece 1 is generated. Similarly, the second piece 2 does not deform, and the second piece 2 itself tries to separate from the structural member B, so that a force in a direction orthogonal to the second piece 2 is generated.

The force in the direction orthogonal to the first piece 1 and the force in the direction orthogonal to the second piece 2 may be an impact force accompanied by an impact when violent shaking occurs.

When a force in the orthogonal direction is generated on the first piece 1 due to this impact, the pulling resistance of the fixing means for fixing the first piece 1 to the one structural member A and the third piece 3 to the one side. Structural member A
The drag force of the shearing force generated in the fixing means fixed to the first piece 1
It opposes the force in the orthogonal direction. Therefore, even if a large force is caused to separate the first piece 1 from the one structural member A, the first piece 1 and the third piece 3 remain fixed to the one structural member A. That is, by restraining the same structural member A from two directions, the fixing strength of the reinforcing metal member with respect to the structural member A is increased.

Similarly, when a force is applied to the second piece 2 in a direction orthogonal to the second piece 2, the second piece 2 is similarly moved to the other structural member B.
The pulling resistance of the fixing means fixed to the second piece 2 and the shearing force of the shearing force generated in the cross section of the fixing means fixing the fourth piece 4 to the other structural member B oppose the force in the direction orthogonal to the second piece 2, The piece 2 remains fixed to the other structural member B.

Also, when a vertical shaking earthquake occurs and a force is generated in the direction in which the mortar of the pillar comes out of the mortise hole, similarly, the first piece 1 tries to lift the corner side of the second piece 2. Also, since the section modulus formed by the second piece 2 and the fourth piece 4 is large, the second piece 2 does not bend, and the first piece 1 and the second piece 2
The deformation of the corners formed by and does not occur. Therefore,
A force for separating from the other structural member B is generated in the entire second piece 2.

Even when a force to separate the structural member B from the second piece 2 is generated, the resistance of the fixing means for fixing the second piece 2 to the other structural member B is the same as in the case of rolling. The tensile force and the drag force of the shearing force generated in the cross section of the fixing means that fixes the fourth piece 4 to the other structural member B oppose the force in the direction orthogonal to the second piece 2, and the second piece 2 is the other structural member. It remains fixed to B.

Therefore, even when the pillar rolls or pitches, the reinforcing metal fitting according to the present invention can maintain the connection between the structural members without the reinforcing metal fitting falling off from the structural member.

Further, the first piece 1 and the second piece 2
Then, each of the third piece 3 and the fourth piece 4 may be provided with a hole 6 through which a screw member 5 for fixing the reinforcing metal member to the structural members A and B is inserted.

If the reinforcing member is fixed to the structural member by inserting the screw member 5 into the hole 6, the reinforcing member can be securely fixed by the tightening force generated in the axial direction of the screw member 5.

[0033]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention will be described below with reference to the drawings.

The reinforcing metal fitting according to one embodiment of the present invention is
As shown in FIG. 1, the plate member is bent at a right angle, and is connected to the pillar A at a right angle to the first contact plate 1 which is a first piece that abuts and is fixed to the side surface of the pillar A. And a second contact plate 2, which is a second piece fixed by contacting the beam B, is formed.
That is, the first contact plate 1 and the second contact plate 2 form a substantially right angle.

The first contact plate 1 has a rectangular shape,
A third trapezoidal piece having one oblique side formed by being bent at a substantially right angle and fixed to the pillar A at one side end in the short side direction of the first contact plate 1 A contact plate 3 is provided. One end of the first contact plate 1 and the bottom side of the trapezoidal third contact plate 3 are common sides. Therefore, by providing the third contact plate 3 in the right angle direction on the first contact plate 1, the section modulus becomes large and the bending strength becomes large.

The other end of the first contact plate 1 in the short side direction is provided with a reinforcing piece 7 which is bent toward the second contact plate 2 side. Furthermore, at an intermediate position in the short side direction of the first contact plate 1,
A long first convex reinforcing portion 9 is formed by extruding from the contact surface side with the pillar A, the elongated first convex reinforcing portion 9 having semicircular shape at both ends which is substantially parallel to the long side of the first contact plate 1. . That is, the section modulus of the first contact plate 1 is further increased.

Also, on both long sides of the first convex reinforcing portion 9,
Also, there is a screw 5 which is a fixing means with a space in the long side direction.
A through hole 6 is provided for inserting the.

The second contact plate 2 also has a rectangular shape,
A fourth trapezoidal fourth piece having one oblique side formed by being bent at a substantially right angle and fixed to the beam B at one side end of the second contact plate 2 in the short side direction. A contact plate 4 is provided. One end of the second contact plate 2 and the bottom side of the trapezoidal fourth contact plate 4 are common sides. Therefore, since the fourth contact plate 4 in the orthogonal direction is provided on the second contact plate 2, the section modulus becomes large and the bending strength becomes large.

At the other end of the second contact plate 2 in the short side direction, a reinforcing piece 10 bent to the first contact plate 1 side is formed.
Further, at a middle position of the second contact plate 2 in the short side direction, a long second convex reinforcing portion 12 in which both ends which are substantially parallel to the long side of the second contact plate 2 are semicircular. Are extruded from the contact surface side with the beam B. That is, the section modulus of the second contact plate 2 is further increased.

Further, through holes 6 through which the screws 5 as fixing means are inserted are provided at both sides of the long side of the second convex reinforcing portion 12 and at intervals in the long side direction.

The third contact plate 3 has a pillar A at the other end of the third contact plate 3 facing the common side of the first contact plate 1 and the third contact plate 3.
A bent reinforcing piece 8 is formed on the side opposite to the contact surface with. In addition, a hole 6 that penetrates the screw 5 that is the fixing means is provided at approximately the center of the third contact plate 3.

The fourth contact plate 4 has a beam B at the other end of the fourth contact plate 4 facing the common side of the second contact plate 2 and the fourth contact plate 4.
A bent reinforcing piece 11 is formed on the opposite side of the contact surface with. In addition, a hole 6 that penetrates the screw 5 that is a fixing means is provided at approximately the center of the fourth contact plate 4.

One oblique side of the third contact plate 3 and the fourth contact plate 4
The hypotenuse forms an angle of 90 degrees or more. Preferably, the angle formed by one oblique side of the third contact plate 3 and one oblique side of the fourth contact plate 4 is an obtuse angle.

Further, at the corner formed by the first contact plate 1 and the second contact plate 2, a third convex reinforcing portion 13 extruded from the contact surface side with the pillar A and the beam B is formed. Has been formed.

In the reinforcing metal fitting having the above-mentioned structure, the first contact plate 1 is on the side surface of the pillar A, the second contact plate 2 is on the front surface of the pillar A, the second contact plate 2 is on the upper surface of the beam B, and With the four contact plates 4 in contact with the front surface of the beam B, screws 5 are inserted through the holes 6, and the screws 5 are fixed to the pillars A and the beams B by screwing.

An earthquake occurs, which causes vibration and shaking, resulting in a pillar A.
First contact plate 1 that is fixed to the pillar A of the reinforcing metal fitting attached in the above state when the object swings away from the reinforcing metal fitting.
Since the cross-sectional modulus formed by and the second contact plate 2 is large, the first contact plate 1 tries to pull the second contact plate 2 without deformation.

Second contact plate 2 pulled by first contact plate 1
Also, since the section modulus of the fourth contact plate 4 is large, it does not deform.

Therefore, a pulling force is generated on the screw 5 fixing the first contact plate 1 and the second contact plate 2. At the same time, a shearing force is also generated on the screw 5 fixing the third contact plate 3 and the fourth contact plate 4.

Here, even if the pillar A is shaken, the reinforcing metal fitting can maintain the connection between the pillar A and the beam B.
Since the permissible force of the screw 5 for fixing the screw 5 in the axial direction is the sum of the allowable pull-out force of the screw 5 and the shearing force generated in the screw 5 having the axial center in the direction perpendicular to the screw 5. is there. When the allowable force is increased, if the number of screws 5 fixing the third contact plate 3 and the fourth contact plate 4 is increased, the allowable shear force is increased and the strength of the connecting portion is further increased.

Therefore, the reaction force of the shearing force of the screw 5 fixing the third contact plate 3 and the fourth contact plate 4 opposes the pulling force acting in the axial direction of the screw 5, and the screw 5 falls off. Without the connection between the pillar A and the beam B, the reinforcement of the strength of the connecting portion can be maintained.

When a vertical shaking earthquake occurs and the column A sways in the axial direction of the column A and a force acts so that the column A and the beam B are separated from each other, the first beam fixed to the column A is fixed. The contact plate 1 pulls the second contact plate 2 fixed to the beam B.

As in the case of the swing of the pillar A, the second contact plate 2
Since the cross-sectional modulus formed by the first contact plate 4 and the fourth contact plate 4 is large, the second contact plate 2 is not deformed and a pulling force is generated in the screw 5 fixing the second contact plate 2. Of.

When a pulling force is generated on the screw 5 fixing the second contact plate 2, a shearing force is generated on the screw 5 fixing the fourth contact plate 4 at the same time.

Therefore, the reaction force of the shearing force of the screw 5 to which the fourth contact plate 4 is fixed is the same as that of the screw 5 to which the second contact plate 2 is fixed.
The pull-out force of the pillar A and the beam B is prevented by preventing the screw 5 for fixing the second contact plate 2 from falling off.
Therefore, the reinforcement of the strength of the connecting portion can be maintained.

That is, the third contact plate 3 and the fourth contact plate 4
By providing the reinforcing metal member, the strength of the reinforcing metal member can be increased, and the resistance force against the force of separating the reinforcing metal member from the pillar A and the beam B can be increased, and the strength of the connecting portion between the pillar A and the beam B can be reinforced. It can be maintained. Therefore, it is possible to connect the pillar A and the beam B, which are two structural members, and to reinforce the strength of the connecting portion between the pillar A and the beam B without the reinforcing metal fittings falling off.

The reinforcing metal fitting according to the present invention can be used not only for reinforcing the connecting portion between columns and beams, but also for reinforcing the connecting portion between beams. Further, although the present embodiment has been described by using the square pillars and the beams, the present invention is not limited to the square structural member, and may be a structural member having a substantially circular cross section.

The fixing means for fixing the reinforcing metal member to the structural member is not limited to the screw, but may be a nail, an adhesive or an adhesive tape.

When the reinforcing metal fitting of the above embodiment is replaced with a screw 5 and fixed with an adhesive and the pillar A swings in the vertical direction, the first contact plate 1 fixed to the pillar A is replaced with the second contact plate 2. To pull it away from beam B. That is, the movement of the pillar A is changed by the first contact plate 1
The effect of the shearing force generated on the adhesive surface for fixing the second contact plate 2 is to try to lift the second contact plate 2 through the first contact plate 1, and the tensile force is applied to the adhesive surface where the second contact plate 2 is fixed to the beam B. It occurs.

Against this tensile force, the adhesive force of the adhesive surface to which the second contact plate 2 is fixed and the shearing force generated on the adhesive surface to which the fourth contact plate 4 is fixed oppose each other to prevent the reinforcing metal fitting from falling off. Prevents and maintains the reinforcement of the strength of the connecting portion of the pillar A and the beam B.

The reinforcing portion is formed by bending the other end of the first contact plate 1, the second contact plate 2, the third contact plate 3, and the fourth contact plate 4, The material is not limited to the one extruded from the contact surface side, but can be variously changed depending on the material and plate thickness of the reinforcing metal fitting.

In addition, the force of the same condition does not act on all of the joints of the column and the beam, and a force is generated in the direction in which the mortu comes out from the mortise hole, and the strength of the connecting portion is reinforced against the force. As shown in FIG. 2, a pillar A and a beam B that are L-shaped in plan view
It is also possible to use a reinforcing metal member formed by a connecting piece 20 for connecting the connecting pieces 20 and a column abutting piece 21 fixed to the column A forming a right angle with the connecting piece 20.

The connecting piece 20 includes a portion that abuts the pillar A and a beam B.
Has one side end common to the portion abutting against. The width W1 of the portion abutting on the beam B is wider than the width W2 of the portion abutting on the pillar A.

A bent reinforcing portion 22 is formed at one end common to the portion contacting the pillar A and the portion contacting the beam B, and the other end of the portion contacting the beam B is formed. Has
The bent reinforcing portion 23 is formed.

Further, in the middle of the width W2 of the portion that abuts on the pillar A, a long convex reinforcing portion 24, which is substantially parallel to the reinforcing portion 22 and has semicircular ends, contacts the pillar A. It is formed by extruding from the contact surface side.

The column contact piece 21 is formed by bending the other end of the portion that contacts the column A. That is, the connecting piece 20
The other end of the portion that abuts the column A is a common side with the column abutting piece 21. In addition, the column contact piece 21 includes a reinforcing portion 25 formed by bending the opposite side of the common side,
A convex reinforcing portion 26, which is substantially parallel to the reinforcing portion 25 and has semi-circular ends at both ends, is formed by extruding from the contact surface side with the pillar A.

The reinforcing metal fitting is also fixed by the screw 5 through the hole 6 formed in the connecting piece 20 and the column contact piece 21 as in the embodiment of the reinforcing metal fitting of the present invention.

When a force is applied to the reinforcing metal fitting having the above-mentioned structure in the direction of the mortise coming out of the mortise hole, only the shearing force is applied to each of the screw 5 fixed to the pillar A and the screw 5 fixed to the beam B. Column A and beam B because they do not generate pulling force
The connection is maintained and the strength of the connecting portion is reinforced.

Further, as shown in FIG. 3, the reinforcing metal member for reinforcing the connecting portion such that the column sways in the axial direction of the beam forms the reinforcing portion 30 by bending the both long sides of the rectangular flat plate. You may employ what was done.

In such a reinforcing metal member, a convex reinforcing portion 31 having a long side in the side end direction is provided in the middle of the direction of the short side, which is formed by extruding from the contact surface side that abuts the pillar A and the beam B. ing. Then, holes 6 through which the screws 5 are inserted are formed at both sides of the convex reinforcing portion 31 and at both ends in the long side direction at intervals.

The reinforcing metal fitting has one end fixed to the pillar A with a screw 6 through a hole 6 and the other end fixed to the beam B through a hole 6 so as to form an angle with the pillar A and the beam B. It is fixed with screws 5. That is, the reinforcing metal fitting is attached so that the reinforcing metal fitting, the pillar A, and the beam B form a triangle.

When the column sways in the axial direction of the beam, only the shearing force acts on each of the screw 5 with the reinforcing metal member fixed to the column A and the screw 5 with the reinforcing member B fixed. The drag force exerts a tensile force and a compressive force in the long side direction of the reinforcing metal member. Therefore, the pulling force for pulling out the screw 5 does not occur, and the reinforcing metal fitting maintains the connection between the pillar A and the beam B and reinforces the strength of the connecting portion.

[0072]

As described above, the reinforcing metal fitting according to the present invention is
The strength of the reinforcing metal fitting itself is increased by providing the third piece in the right angle direction on the first piece to increase the section modulus, and also providing the fourth piece in the second piece in the right direction to increase the section coefficient. Therefore, it is possible to prevent deformation of the vicinity of the corner portion formed by the first piece and the second piece that tends to separate the reinforcing metal member from the structural member, and prevent the reinforcing metal member from falling off the structural member.

Further, by fixing the third piece and the fourth piece, the resistance force against the force for dropping the reinforcing metal member becomes large, and even if a large shake or vibration due to an earthquake occurs, it will fall off. Instead, it is possible to maintain the connection between the structural members and to reinforce the strength of the connecting portion of the structural member.

Further, according to the conditions generated in a large number of connecting parts constituting the structural member, if the reinforcing metal fittings including the reinforcing metal fittings according to the present invention are combined to form a building which is a structure, the strength of the building is increased. Can provide earthquake-resistant buildings at an economical cost without over-spec.

[Brief description of drawings]

FIG. 1 is an exploded perspective view of mounting a reinforcing metal fitting according to an embodiment of the present invention.

FIG. 2 is an exploded perspective view of a reinforcing metal fitting used for a connecting portion under other conditions.

FIG. 3 is an exploded perspective view of another reinforcing metal fitting used for the connecting portion under other conditions.

FIG. 4 is an exploded perspective view of the attachment of a conventional reinforcing metal fitting.

[Explanation of symbols]

1 ... 1st piece (1st contact plate), 2 ... 2nd piece (2nd contact plate), 3 ... 3rd piece (3rd contact plate), 4 ... Four pieces (fourth contact plate), 5 ... Screw member (screw), 6.
..Hole, 7, 8, 10, 11 ... Reinforcing piece, 9 ... First convex reinforcing portion, 12 ... Second convex reinforcing portion, 13 ...
Third convex reinforcement

Claims (2)

(57) [Claims] 1. A first piece (1) fixed substantially by abutting to one structural member (A) of two structural members (A, B) connected at substantially right angles, and and a strip (1) and the second piece was found provided extending from one end of said piece (1) so as to form a substantially right angle (2), said second piece (2) the other structural member In the reinforcing metal fitting fixed substantially in contact with (B), the third piece (3) extending from one side of the first piece (1) in a direction substantially perpendicular to the first piece (1) is The first piece is provided with a fourth piece (4) extending from one side of the second piece (2) in a direction substantially perpendicular to the second piece (2).
The structural member is provided at the corner formed by (1) and the second piece (2).
(A, B) a convex reinforcing portion (1 extruded from the contact surface side with
3) is formed, the third piece (3) is fixed so as to substantially abut on the one structural member (A), and the fourth piece (4) is formed.
Is substantially abutted on and fixed to the other structural member (B). 2. The first piece (1) and the second piece (2).
And each of the third piece (3) and the fourth piece (4),
The reinforcing metal fitting according to claim 1, wherein a hole (6) for inserting a screw member (5) for fixing the reinforcing metal fitting to the structural member (A, B) is provided.